Electrical transmission or interconnection systems – Wave form or wave shape determinative or pulse-producing...
Patent
1986-12-16
1988-04-19
Shoop, Jr., William M.
Electrical transmission or interconnection systems
Wave form or wave shape determinative or pulse-producing...
307 9, 307 10R, 123605, 123602, 123620, 315209SC, F02P 500
Patent
active
047391855
ABSTRACT:
A pulse generating circuit for a plasma ignition system includes a thyristor connected between a supply terminal and earth. A primary winding (Wp) of a transformer (TR) and a first capacitor (C.sub.1) are connected across the thyristor. The supply terminal is also connected through a secondary winding (W.sub.s) and a diode (D) to an output terminal. A saturable core inductor (L) and a second capacitor (C.sub.2) are connected in series across the output terminal and earth. A plasma plug is also connected across the output terminal and earth. In operation, the first and second capacitors are charged and the thyristor is fired. A high voltage pulse is applied by the secondary winding (W.sub.s) to the plasma plug causing electric breakdown. The second capacitor (C.sub.2) then discharges through the inductor (L) and the plasma plug. Four alternative circuits are also described.
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Lee Michael J.
Wentworth Philip R.
Ip Paul
Lucas Industries Public Limited Company
Shoop Jr. William M.
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